A 24-year-old man presents to his primary care physician with complaints of new-onset sore throat and fatigue. He is diagnosed with acute pharyngitis and given a prescription for ampicillin as empiric treatment. Five days later he presents to a local hospital emergency department complaining of a new rash that began on his trunk and spread to his arms and legs. On examination, he is found to have widespread erythematous macules and papules, some of which coalesce, that are located diffusely across his trunk and extremities.
B. Stevens-Johnson syndrome
C. Morbilliform drug eruption
D. Toxic epidermal necrolysis syndrome
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